<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>点名系统</title>
    <style type="text/css">
      * {
        font-family: '微软雅黑';
        /*transition-duration: ;*/
      }

      h1,
      h2 {
        animation: changeColor 2s linear infinite;
        animation-direction: alternate;
      }

      h1 {
        background-color: yellowgreen;
        color: white;
        text-align: center;
      }

      #content > div {
        float: left;
        width: 100px;
        height: 50px;
        margin: 5px;
        font-size: 20px;
        line-height: 50px;
        text-align: center;
      }

      .cell {
        background-color: black;
        color: white;
      }

      .cell.active {
        background-color: skyblue;
        color: crimson;
      }
      .selected {
        background-color: skyblue;
        color: crimson;
      }

      .current,
      .a {
        background-color: greenyellow;
        color: blueviolet;
      }

      button {
        display: inline-block;
        height: 50px;
        /*width: 50px;*/
        background-color: yellowgreen;
        color: white;
        font-size: 16px;
        margin: 10px;
      }

      select {
        display: inline-block;
        height: 30px;
        width: 100px;
        border: 1px solid yellowgreen;
        background-color: blanchedalmond;
        color: black;
        font-size: 14px;
        margin: 10px;
      }

      @keyframes changeColor {
        from {
          color: pink;
        }
        to {
          color: blueviolet;
        }
      }

    </style>
  </head>

  <body>
    <h1>点名系统</h1>
    <h2 id="selectTitle">被选中的小伙伴：<span></span></h2>
    <button>开始</button>

    <div id="content" >
      <!-- <div class="cell"></div> -->
    </div>

    <script src="./js/index.js"></script>
  </body>
</html>
